EP0692189B1 - Improved electronic immersion heater - Google Patents

Improved electronic immersion heater Download PDF

Info

Publication number
EP0692189B1
EP0692189B1 EP95110711A EP95110711A EP0692189B1 EP 0692189 B1 EP0692189 B1 EP 0692189B1 EP 95110711 A EP95110711 A EP 95110711A EP 95110711 A EP95110711 A EP 95110711A EP 0692189 B1 EP0692189 B1 EP 0692189B1
Authority
EP
European Patent Office
Prior art keywords
electronic
immersion heater
tube
heater according
sensor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95110711A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0692189A1 (en
Inventor
Elio Marioni
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Askoll SpA
Original Assignee
Askoll SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Askoll SpA filed Critical Askoll SpA
Publication of EP0692189A1 publication Critical patent/EP0692189A1/en
Application granted granted Critical
Publication of EP0692189B1 publication Critical patent/EP0692189B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/78—Heating arrangements specially adapted for immersion heating
    • H05B3/80—Portable immersion heaters
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
    • A01K63/06—Arrangements for heating or lighting in, or attached to, receptacles for live fish
    • A01K63/065—Heating or cooling devices

Definitions

  • the present invention relates to an improved electronic immersion heater used particularly but not exclusively in aquariums or the like.
  • Said basic structure comprises a tube, closed at one end, containing, in succession from the bottom towards the open end, a heating element, an electronic board with the corresponding support and with a temperature sensor, and a hermetic plug.
  • the heating element is constituted by an electric resistor intermittently powered under the fedback control of the temperature sensor.
  • the aim of the temperature sensor is therefore to detect variations in water temperature in the aquarium and, if these temperature variations exceed certain preset limits, to drive the switch, closing or opening it and accordingly supplying power or not to the heating element.
  • the fundamental drawback of commercially available heaters resides in that the heating element produces such an amount of heat that, despite the dispersion provided by water and the thermal insulations provided inside the tube, the temperature sensor is affected by said heat.
  • the temperature sensor does not measure the temperature conditions of the water but a combination thereof with the internal temperatures produced by the heater.
  • the improved immersion heater for liquids disclosed in Italian patent application no. PD 93 A 000169 in the name of the same Applicant should be mentioned: the intermediary for contact between the sensor and the tube is an elastic lamina that is forced to copy the internal surface of said tube.
  • GB-A-2163328 discloses a tank heater which includes in combination the features as set forth in the pre-characterizing portion of the appended claim 1.
  • the principal aim of the present invention is to provide an immersion heater for liquids that eliminates the drawbacks mentioned above in known types.
  • an object of the invention is to provide an immersion heater for liquids that is not difficult to assemble and can be obtained with known production means.
  • Another object of the invention is to provide an immersion heater for liquids, the cost whereof is competitive with respect to currently commercially available heaters.
  • Another object of the present invention is to provide a heater allowing fine and precise temperature adjustment in order to create an optimum environment inside the aquarium.
  • an electronic immersion heater for liquids is generally designated by the reference numeral 10.
  • the electronic heater 10 comprises a tube 11 closed at one end, the internal volume whereof is divided by a circular partition 12 into two separate regions.
  • a heating element 14 is contained in a first region 13 that also includes the bottom of the tube 11.
  • the heating element 14 is constituted by a support 15 whereon an electric resistor (not shown in the figures) is wound.
  • An electronic board 17 is contained in another region 16 of the tube 11.
  • the electronic board 17 is kept in an almost diametrical position by a support 18 and by a spacer 19.
  • the support 18 has a substantially semicylindrical shape and such dimensions that, when it is inserted into the tube 11, its outer surface perfectly copies the internal surface of said tube 11.
  • two holes 20 and 21 are also formed on the lateral surface of the support 18, the hole 20 being substantially circular, whereas the slotted hole 21 is shaped so as to form a circular enlargement at one of its ends.
  • a tubular element 22 also extends from a surface of the support 18 that faces the open end of the tube 11 after assembly.
  • the spacer 19 is substantially shaped like a curved tile, wherein the concavity is directed towards the concavity of the support 18 after assembly, said spacer 19 also acting as a cover for the electronic board 17.
  • a conductor 23 electrically connects the electronic board 17 to the electric resistor (which, as mentioned, is not shown in the figures) by passing through the partition 12.
  • a concave housing 24 is inserted in the complementarily shaped hole 21, the cavity of said housing being directed towards the electronic board 17 after assembly.
  • the housing 24 makes contact with the internal surface of the tube 11 by means of one of its front surfaces 25, shaped so as to partially copy said internal surface.
  • the housing 24 furthermore contains, by cooperating with a guiding and containment ring 27, a sensor 28 of the NTC pellet type without rheophores.
  • the guiding ring 27, the sensor 28, and the region 26 are mutually coaxial; the ring 27 furthermore couples, as a shaft, to the region 26 by interference fit.
  • guiding tabs 29 are provided that extend from its edge and are mutually arranged so as to substantially form a cross.
  • the sensor 28 is pushed against the internal surface of the housing 24 by means of a first helical spring 30 that is coaxial to said sensor.
  • the spring 30 is made of conducting material, and thus not only spaces the sensor 28 and the electronic board 17, but also provides their mutual electrical connection.
  • a second helical spring 31 is interposed between the housing 24 and the electronic board 17.
  • Said spring 31 the axis whereof is substantially parallel to the spring 30, provides a further spacing element, since it, too, pushes the housing 24 against the internal surface of the tube 11.
  • the spring 30, the housing 24, and the spring 31 are mutually series-connected, so as to form a circuit that closes with the circuitry provided on the electronic board 17 and is not illustrated in the figures.
  • Devices which produce large amounts of heat are connected to the board 17. These devices are for example an electronic component 32, such as a TRIAC or SCR, placed proximate to the open end of the tube 11, a LED 33 facing the tube by means of the hole 20, and supply and dropping resistors 34 for the LED.
  • the TRIAC has rheophores shaped so as to space it as much as possible from the electronic board 17 insofar as the transverse dimensions of the tube allow.
  • knob 37 is arranged on the top of a hermetic plug 39, the power supply cable 38 also passing therethrough.
  • Said two heat distributions refer to the heater 10 when it is immersed in water and when it is exposed to the air respectively.
  • the sensor 28 is placed in a minimum-temperature region, whereas when the heater is exposed to the air said region is highly affected by the electric resistor.
  • the sensor 28 correctly detects the water temperature, thus allowing precise and reliable adjustment, whereas when said heater is removed from the aquarium for maintenance or other reasons, the electric resistor becomes the main source of influence for the sensor 28, causing its immediate disconnection and thus preventing the tube 11 from cracking.
  • the elastic elements ensure excellent repeatability and reliability in aquarium temperature control.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Resistance Heating (AREA)
  • Control Of Resistance Heating (AREA)
EP95110711A 1994-07-15 1995-07-10 Improved electronic immersion heater Expired - Lifetime EP0692189B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPD940133 1994-07-15
IT94PD000133A IT1268982B1 (it) 1994-07-15 1994-07-15 Riscaldatore elettronico ad immersione perfezionato

Publications (2)

Publication Number Publication Date
EP0692189A1 EP0692189A1 (en) 1996-01-17
EP0692189B1 true EP0692189B1 (en) 1998-03-04

Family

ID=11390771

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95110711A Expired - Lifetime EP0692189B1 (en) 1994-07-15 1995-07-10 Improved electronic immersion heater

Country Status (4)

Country Link
US (1) US5568587A (it)
EP (1) EP0692189B1 (it)
DE (1) DE69501693T2 (it)
IT (1) IT1268982B1 (it)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019122142A1 (de) * 2019-08-19 2021-02-25 Wen-Hong Su Mechanische Stabheizung mit Stromabschaltung bei Verlassen des Wassers

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW329082U (en) * 1996-08-06 1998-04-01 Quan-Zeng Ceng Sinking type temperature control and heating device having glass tubular shape with built-in liquid crystal display (LCD)
US6061500A (en) * 1998-07-10 2000-05-09 Su; Wen-Hong Electronic heater for an aquarium
US6097007A (en) * 1999-03-31 2000-08-01 Eiko Electric Products Corp. Aquarium water temperature controller
US6555797B2 (en) * 2000-01-26 2003-04-29 Rena France Fully submersible immersion heater
US6504998B1 (en) * 2002-02-06 2003-01-07 Eike Electric Products Corp. Structure of temperature-sensing tube for aquarium
US6584280B1 (en) * 2002-08-13 2003-06-24 Meiko Pet Corporation Aquarium heater
US6658205B1 (en) * 2002-11-14 2003-12-02 Meiko Pet Corporation Apparatus for adjusting temperature variation value correction of aquarium heating tube
US7085482B2 (en) * 2004-09-20 2006-08-01 Aquarium Pharmaceuticals, Inc. Aquarium water heater
US20070019709A1 (en) * 2005-07-20 2007-01-25 Eiko Electric Products Corp. Structure of temperature sensor of electric heater
US7293914B2 (en) * 2005-10-28 2007-11-13 Eiko Electric Products Corp. Temperature detecting heater with indicating structure for aquarium
US20080173637A1 (en) * 2005-11-02 2008-07-24 Koshiro Taguchi Insulated waterproof heater
CN104322431A (zh) * 2014-09-27 2015-02-04 李伟 一种鱼缸加热棒结构
CN105263203B (zh) * 2015-09-30 2019-03-26 安徽省宁国市天成科技发展有限公司 一种缓冲型防干烧加热器
DE102015016508A1 (de) * 2015-12-18 2017-06-22 Sciknowtec Gmbh Magnetrührer mit Heizung
US10786110B2 (en) 2017-09-13 2020-09-29 Lucky Consumer Products Limited Portable heating rod
TWM587435U (zh) * 2019-08-20 2019-12-11 蘇文宏 離水斷電玻璃管式加溫器

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2953921A (en) * 1957-06-24 1960-09-27 Hrand M Muncheryan Temperature-indicating device and closure cap
US3751305A (en) * 1971-03-10 1973-08-07 Alco Standard Corp Adjustable spring-loaded temperature sensing device
US3746836A (en) * 1971-12-15 1973-07-17 Mattel Inc Aquarium heater
DE2554237A1 (de) * 1975-12-03 1977-06-16 Eugen Jaeger Ohg Elektromechan Temperaturgeregelte heizvorrichtung
US4124793A (en) * 1978-01-13 1978-11-07 Metaframe Corporation Aquarium water heater
DE2931960A1 (de) * 1979-04-12 1981-02-19 Baensch Tetra Werke Vorrichtung zur innenbeheizung von aquarien
JPS58117427A (ja) * 1981-12-30 1983-07-13 Casio Comput Co Ltd センサの取付部構造
GB2163328B (en) * 1984-08-11 1987-12-09 Ronald Edward Hester Tank heater
DE3727313A1 (de) * 1987-08-17 1989-03-02 Bauknecht Hausgeraete Halteeinrichtung zum festlegen mindestens eines, elektrische anschlussmittel aufweisenden thermostates
JPH02144875A (ja) * 1988-11-25 1990-06-04 Matsushita Electric Ind Co Ltd 自己温度制御ヒータ
DE4113294C1 (it) * 1991-04-24 1992-06-17 Fa. Carl Freudenberg, 6940 Weinheim, De

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019122142A1 (de) * 2019-08-19 2021-02-25 Wen-Hong Su Mechanische Stabheizung mit Stromabschaltung bei Verlassen des Wassers

Also Published As

Publication number Publication date
DE69501693D1 (de) 1998-04-09
DE69501693T2 (de) 1998-07-02
ITPD940133A1 (it) 1996-01-15
ITPD940133A0 (it) 1994-07-15
US5568587A (en) 1996-10-22
IT1268982B1 (it) 1997-03-18
EP0692189A1 (en) 1996-01-17

Similar Documents

Publication Publication Date Title
EP0692189B1 (en) Improved electronic immersion heater
US4208570A (en) Thermostatically controlled electric engine coolant heater
EP0233136A3 (en) Water heater heating element assembly
US3746836A (en) Aquarium heater
US20080197064A1 (en) Filter device, in particular fluid filter, with a heater
CA1141411A (en) Aquarium heater
EP0757507B1 (en) A device for heating and maintaining a constant temperature in a liquid, in particular the water of aquariums
EP0574065A2 (en) Heater and control apparatus
US5278941A (en) Electric immersion heater with restricted heat-flow paths to the thermostatic control thereof
CN1149047C (zh) 电热水设备
US4839498A (en) Electrically heated fish tank unit
US4933533A (en) Demisting mirror
US6061500A (en) Electronic heater for an aquarium
US5345059A (en) Temperature self-regulating, electrically-heated spoon
GB2152699A (en) Heat disinfection of contact lenses
EP0759261B1 (en) Compact immersion heater, particularly for aquariums
GB2084437A (en) PTC energized immersible heater
JPS5856582Y2 (ja) 電気調理器
JPS592729Y2 (ja) 電気調理器
EP1545194B1 (en) Immersion heater device for aquariums and the like
CN209499472U (zh) 液体加热容器和用于液体加热容器的控制单元
JPH054234Y2 (it)
JP3121194U (ja) 観賞魚用ヒータ装置
JPS5838513Y2 (ja) 電熱器具の温度ヒュ−ズ取付装置
JPH0321696Y2 (it)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FR GB IT

17P Request for examination filed

Effective date: 19960704

17Q First examination report despatched

Effective date: 19960807

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19980304

REF Corresponds to:

Ref document number: 69501693

Country of ref document: DE

Date of ref document: 19980409

ET Fr: translation filed
ITF It: translation for a ep patent filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 69501693

Country of ref document: DE

Representative=s name: TETZNER & PARTNER MBB PATENT- UND RECHTSANWAEL, DE

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20140624

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20140624

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20140620

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20140721

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 69501693

Country of ref document: DE

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20150709

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20150709